The paleo lifestyle encourages proper training and exercise along with the diet concept. If you have been doing paleo for some time now, you could have been coupling it with your training. The key to enjoying the benefits of your exercise with paleo dieting is to do it appropriately, that means never over train. You might have learned this issue by now, but do you know that environmental temperature also affects your training?
Today’s topic will be all about one of the physical factors present in your gym (or wherever you do your exercise) – and that is temperature. We will tackle on how the temperature in the place where you perform your exercise affects your training and how it can affect your body overall. Is it good to train in warm or cold environment? Is it recommended to sweat a lot in a warm environment or otherwise?
Hot and Humid Environment for Exercise?
Would you choose a humid place to perform your exercise and see that sweat squeezing out of your pores making you feel like you’re really burning those calories? Well, the next question to be asked is if this “sweating out” really healthy in the first place.
Hot and humid conditions seem challenging but potentially hazardous according to the University of Iowa Hospitals & Clinics.1 It is true that the “sweat-it-all-out” idea can encourage one that calories are being burned; however, extreme sweating from hot and humid conditions can cause dehydration if not properly taken care of during exercise. In sweating, not only water but important electrolytes can be excreted. And extreme sweating may cause heat cramps, heat exhaustion or even heat stroke.
A study has investigated on the influence of environmental temperature on exercise-induced muscle fatigue; and the researchers have found out that “exercise in the heat has detrimental effects on circulation that might negatively influence endurance performance.”2 This study stated that exercising in the heat can divert the blood away from the inspiratory muscles to the skin and can exacerbate the said exercise-induced inspiratory muscle fatigue.2
Despite these negative effects of doing your training in hot and humid environment, there are some studies that prove the positive effects of such situation. A study on the effect of ambient temperature on growth hormone (and prolactin) response to exercise has been published in the late 70’s.3 The researchers have found out that at 400 exercise, an increase in plasma growth hormone was observed with subsequent increase in hormone prolactin in some of the subjects.3
A more recent study (in 2009) has also investigated on the acute effect of environmental temperature during exercise among active men and their subsequent intake of energy.4 This study has concluded that “exercise in a neutral environmental temperature is associated with higher energy intake in the subsequent meal compared with a control, whereas exercise in the heat is not.”4 This study tells us that exercising in the heat can make the subjects eat less; and this tends to be a positive effect for those who are trying to trim down some weight.
How About Cold Environment for Exercise?
Cold and wet weather conditions is as challenging and as potentially hazardous as exercising in the heat.1 In the 70’s study mentioned above, among the 10 subjects who participated, only 1 showed a rise in growth hormone during exercise in the cold (with no increase in prolactin levels).3 This only shows us that growth hormone may not be that well-stimulated in the cold during exercise.
Cold weather can induce hypothermia or the decrease in the core body temperature and can eventually cause impairment of the muscular and cerebral functions.5 This is applicable to winter conditions and can also include frost bite as its adverse effects during exercise.
The response of the body during exercise in the cold really depends on the severity of the cold temperature and the nature of the exercise.6 A positive effect can be achieved in moderate cold exposure by maintaining normal body temperature through increased heat production and reduced rate of heat loss, and shivering or involuntary muscle contractions.6
Train in Warm or Cold Environment?
You have learned the positive and negative effects of both extreme conditions. The decision to exercise in warm or cold environment depends on your aim or goal. If you plan to get leaner and trim down some weight, warm environment can help curb your appetite as we have learned from the study earlier.
Exercise in the heat can also influence growth hormone production as we have learned. This is another benefit for those who want to get leaner and grow some muscle mass. But remember, hot and humid environment can pose potential risks in exercise.
Cold environment can be beneficial to some extent. A reverse can be true for appetite stimulation if we follow the study mentioned above. This may be beneficial for those who want to gain some pounds but make sure you get the necessary healthy diet such as the paleo diet.
The downside for both environments is the risks involved if the training gets too far. Remember that we have been advocating training to be enjoyable and to give you a good feel after working out. Over training is not recommended especially for both extremes in environmental temperature.
In healthy individuals, there is a known physiological response called acclimatization. Our body can adjust accordingly either by sweating out or shivering in heat or cold, respectively. You can choose the place for your exercise. You only need to follow precautions for certain environments, such as proper hydration or wearing of appropriate clothing. As long as you are healthy and you take the rules accordingly, you can choose to perform your training at your leisure. Because at the end of the day – it is how you enjoy your exercise and feel healthy about it that really matters!
REFERENCES:
1University of Iowa Hospitals and Clinics (1998) ‘Temperature and Humidity on Exercise’ http://www.uihealthcare.com . Accessed: 08-07-11.
2Romer LM, et al (2004) ‘Influence of Environmental Temperature on Exercise-Induced Inspiratory Muscle Fatigue’ http://www.ncbi.nlm.nih.gov . Accessed: 08-07-11.
3Frewin DB, et al (1976) ‘The Effect of Ambient Temperature on the Growth Hormone and Prolactin Response to Exercise’ (Australian Journal of Experimental Biology and Medical Science) http://www.nature.com . Accessed: 08-07-11.
4Shorten A L, et al (2009) ‘Acute Effect of Environmental Temperature During Exercise on Subsequent Energy Intake in Active Men’ (American Society for Nutrition) http://www.acjn.org . Accessed: 08-07-11.
5Gestl, J (2011) ‘Winter Weather Workouts’ http://www.topendsports.com . Accessed: 08-07-11.
6Montana State University-Bozeman (1998) ‘Exercise in the Cold’ http://btc.montana.edu . Accessed: 08-07-11. Exercise and the Paleo Diet
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